Why do blinking crosswalks have a blinking yellow light to warn motorists that someone is crossing? Shouldn’t it be a blinking red light as this means for traffic to stop completely where a blinking ...

Crittercams attached to giant squid reveal that the marine creatures flash colorful lights to communicate and attract mates. Scientists at Stanford University's Hopkins Marine Station mounted cameras, ...

The video shows a bracelet that at first glance looks like a stylish stack of bangles made of gemstones. But then, surprise! The bracelet lights up in an array of fluorescent lights that switch from ...